Mechanism for folding and closing the ends of bags or wrappers.



W. ROSE. MECHANISM FOR FOLDING AND CLOSING THE ENDS 0F BAGS 0R WRAPPERS.

APPLICATION FILED MAR. 8,1916.

Patented Au 13, m.

6 SHEETS-SHEET I.

W. ROSE.

MECHANISM FOR FOLDING AND CLOSING THE ENDS 0F BAGS 0R WRAPPERS.APPLICAIION FILED MAR, 8, 1916' SSHEETSASHEET 2.

J I INVENTOR d/MZam 703mb ATTORNEYS ROSE.

MECHANISM FOR FOLDING AND CLOSING THE ENDS OF BAGS 0B WRAPPERS.

APPLICATION FILED MAR. 8, 1916.

mm 1 9 1 0O 1 m 1 A d 6 I. H m a P 6 SHEETSSHEET 3.

ATTORNEYS v W. ROSE. MECHANISM FOR FOLDING AND CLOSING THE ENDS 0F BAGSOR WRAPPERS.

APPLICATION FILED MAR. 8,1916.

Patented A11 13, 1918.

6 SHEETSSHEET 4.

M ATTORNL-Ys W. ROSE. MECHANISM FOR FOLDING AND CLOSING THE ENDS 0F BAGS0H WRAPPERS.

APPLICAHON FILED MAR-8.1916.

Patented Aug. 13, 1918.

6 SHEETS-SHEET 5 MENTOR W. ROSE. MECHANISM FOR FOLDING AND CLOSING THEENDS 0F BAGS 0R WRAPPERS.

APPLICATION FILED MAR. 8, I916.

6 SHEETS-SHEET 6.

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WILL/HM W0 35 HTTO/RA/E KS UNITED STATES PATENT oF IoE.

WILLIAM nose, or GAINSBOROUGH, ENGLAND.

MECHANISM FOR FOLDING AND CLOSIN' G THE ENDS 0F BAGS OR, WRAPPERfi.

intense.

Specification of Letters Patent.

' Patented Aug. f3, 1918.

Application filed March 8, 1916. Serial No. 82,992. a

To all whom it may concern:

, Be it known that l, WiLLIAM Rosa, a, subject of the King of Great"Britain, at Alli-on Works, Gainsborough, in the county of LincolmEngland, have invented new and useful improvements in mechanism forfolding and closing the ends of bags or wrappers, more especiallyintended for closing the'ends-of bags after they have been charged withtea, cocoa, tobacco, or other material, of which the following is aspecification.

The object of this invention is to provide improved mechanism forfolding the ends of bags, or wrappers, and more especially the ends ofbags after they have been charged, and in describing this invention wewill presume that it is employed for that purpose. The bags may becharged by hand, or by machinery, and be held in boxes, or receptacles,carried by a wheel to which intermittent movements can be given to bringthe boxes, or receptacles, into the difi'erentu positions requiredtooperate upon the bags.

The order in which the folds are made we will presume to be, first onone side, and then on the opposite side, so that two triangular, ornearly triangular, portions are left which are afterward folded onto thepreceding folds, although, if desired, the folds may be made in otherorder, for instance, first on one side and then on the two sides whichare,

at right angles to the first side, and then the fold on the sideopposite to the first side, the folders forming the last fold, or folds,not only folding but, by further movement, also pressing and indentingthe folded end somewhat inward and properly completing all the creasesof the folds on the said end and rendering them not liable, or lessliable, to spring open, this pressing of the folded end being done whilethe bag is in the same po sition as thatyin which the folding is done,so that, by arrangements in accordancewith this invention, the completefolding and the pressing of the creases are done while the bag, orpackage, is in one position, and there is no necessity for a device tokeep the folds down while the packet moves into another position forpressing the creases. This inresiding drawn to a larger scale than towhich Figs.

1, 2 and 3 are drawn) showing thefirst and second folders in difierentpositions and Figs. 7, 8 and 9 are similar elevations showing the lastfolders in olifi'erent positions. Figs. 10, 11 and 1,2 are elevations atright angles to each other and a plan of certain details ashereinaftereXplained. Fig. 13 is an enlarged detail of the folding blade 4.

The movements of the various folders will take place in an order thesame as that in which the folds are made so that it will only benecessary for me to describe one order of folding; namely, that in whichthe second fold is made at the side opposite the first fold and theremaining triangiilar folds are afterward simultaneously made.v Boxes,or

receptacles, 1, carried by an intermittently.

htl.

which forms the first fold is carried and operated by swin ing arms 5,the blade being cranked and having, at each end, a pin 6, mounted inhearings in the swinging arms 5, the center of which is in the sameplane as that in which will be the upper end of the packet when folded.The said blade 4:, is caused to approach the bag 3, in an elevatedposition and is, by a swinging arm 7, turned down .on its center 6, andforms the first fold. The arms 5, are at the proper time caused to swingby a cam 8, which, through an antifriction roller 9,- actuates abellcrank lever 10, connected by a rod 11, to an arm 12, secured to, orformed in one with, thesaid arms 5; and the arm 7, is caused to vswin bya cam 13, actuating, through an anti riction roller 1t,a bellcrank lever15, connected bya rod 16, to an arm 17, secured to, or formed in onewithfthe said arm 7. Movement can be transmitted. from the swinging arm7, to the folding blade 4, to turn it on its pivot pins 6, by'a link 18,connected to an extension 19, on the said blade ltlh i'io

4. Attached to the blade 4, are pins 20, on which are mounted fingers21, which. are caused to operate together, for example by interengagingsegmental racks 22, .actuated in one direction against the action of -aspring 20 by a projection 7 from one of the aforesaid swinging arms.7,engaging a crank arm 22 secured to one of the pins 20 so that the saidfingers open outward the upstanding end of the. bag 3, to allow thesecond folder 23, to operate analogously to the first folder, and alsoto insure the crease in the last folds being properly made. The secondfolder-23, may be carried on a rocking arm 24, by a pin 25, caused, by asuitable cam 26, and bell-crank lever 27, to approach the upstanding endof the package 3,'and then, by a suitable cam 28, bell-crank lever 29,and link 30, to make a sufiicient turn on its pin 25, to fold over thesecond fold. The remaining folds are then made by folders 31, suspendedon arms 32, and

.pivoted on pins 33, and jointed, or geared,

together, for example connected by links 34, and operated by cams 35,36, arms 37 38,

and links 39,. 40, so as to turn down the last folds and press them toprevent reopening; the folders 31, are preferably a little less in areathan the end of the packet so that they by further movement are causedto descend the requisite distance to form an indentation at the end ofthe bag and make the folded end more secure.

The cams 8, 26 and 28, are secured to a shaft 41, and the cams 35 and36, are secured to a countershaft 42, these shafts being preferablyprovided with toothed wheels 43 and 44, through which rotary motion .istransmitted from one 'shaft'td the other. Any suit-able means may beprovided for driving one of the said shafts from a source of motivepower.

It is to be understood that the invention is-not limited to the precisedetails of construction hereinbefore described and illustrated in theaccompanying drawings as it will be evident that modifications can bemade Without departing from the nature of the invention.

What I claim is v 1. In folding and closing mechanism of the. typedescribed, a swinging arm, a movable folder carried thereby, acooperating swinging arm, an operative connection between the latter andthe folder for turning the latter down, and cams operating on said armstofirst bring the folder up to its work and then turn it'down, togetherwith pins carried by said folder, fingers carried by said pins fortemporarily engaging the work, and means for causing said fingers tomove apart to open out the work, preparatory to" the operation of asucceeding folder.

2. In folding and closing mechanism of the type described, a series offolders for operating on the work while the latter is in stationaryposition, certain of the last operating folders having together a lessarea than the end of the packet and means for causing the same to pressthe work. after the folding movement is completedlo indent the end ofthe packet and thus make the folded end more secure.

In testimony whereof I have signed mv name to this specification in thepresence of two subscribing witnesses.

WILLIAM ROSE.

Witnesses:

ALBERT E. T. JOURDAIN, E. O. GEORGE.

